Screen flickers while shutting down

[Aanand]

Hi
My windows 7 screen flickers 3 to 4 times while being shut down. I had no problem previously like this. I am worried, Does this mean something?

 

[asingh]

Could be your card is dying. Re seat it one, the GPU./

 

[thetechfreak]

Check the PSU properly. Reconnect everything(even monitor cables).

If all fails then GPU is at fault